mwbeckumn

extracting from large raster

Discussion created by mwbeckumn on Mar 25, 2011
Greetings,

I am using the 'extract by rectangle' tool in spatial analyst to extract portions of a large four-band raster.  The size of the raster file is several gigabytes and the area to be extracted is about 0.05% the size of the original.  This takes an extremely long time to process.  Equivalently, I found that zooming to the extraction area, then right-clicking the layer, and exporting the data by spatial extent works very quickly.  I need to batch the process for multiple files so both methods are impractical. 

Am I missing something?  Is there another approach I should be using? 

Thanks,

Marcus

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